Ofending or Offending: How To spell?
The word Ofending is misspelled against Offending, which is present continuous of "Offend"
Offending has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings O & ending which should not be misspelled with single 'F'
Wrong Spelling:  O-f-ending  Correct Spelling:  O-ff-ending 
Find more wrongly spelled words of Offending to spell it well.